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National Center for Chronic Disease Prevention and Health Promotion
Division of Adult and Community Health
Health Care and Aging Studies Branch
Arthritis Program
Mailstop K-51
4770 Buford Highway NE
Atlanta, GA 30341-3724
Phone: 770.488.5464
Fax: 770.488.5964
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CDC-Funded Science
Validity and Reliability of Self-reported Arthritis, Georgia Senior
Centers, 2000–2001
Funding Number
U58/CCU 400591
Project Description
The purpose of this project was to asses the validity and reliability
of the BRFSS arthritis case definition in a senior center population
aged >50 years.
Because many persons with arthritis do not see a health care provider
regularly for their symptoms, measuring the full burden of arthritis
relies on self-reported data. The Behavioral Risk Factor Surveillance
System (BRFSS), an ongoing telephone survey, is being used by states and
the CDC Arthritis Program to measure the burden of arthritis. For the
purpose of measuring burden, a “case of arthritis” is identified by a
self-report of chronic joint symptoms and/or doctor-diagnosed arthritis.
Unfortunately, the accuracy of this case definition and its implications
has not been determined. For example, do persons meeting the case
definition have clinically verifiable arthritis? A convenience sample of
attendees in a variety (by geography, socioeconomic status, and race) of
12 senior centers in Georgia was administered using the BRFSS. The data
was examined by board-certified rheumatologists to determine if a person
had arthritis or a related condition.
Key Findings
- For doctor-diagnosed arthritis, sensitivity was 72% (95% CI
65-79) and specificity was 72% (95% CI 64-81).
- Agreement (reliability of self-reporting) between the telephone
survey and written responses (at the examination) for
doctor-diagnosed arthritis was high (kappa = 0.88).
- Self-reported doctor-diagnosed arthritis was highly reliable,
and moderately sensitive and specific among these senior center
participants.
Abstracts, Publications, Presentations
- Bombard JM, Powell KE, Martin LM, Helmick CG, Wilson WH.
Validity and reliability of self-reported arthritis: Georgia Senior
Centers, 2000–2001. Am J Prev Med 2005;28(3):251–258.
Principal Investigator
Jennifer B. Bombard, MSPH
Arthritis Foundation, Georgia Chapter
2970 Peachtree Rd., NW, Suite 200
Atlanta, GA 30305
Back to Funded Science
Page last reviewed: June 4, 2008
Page last modified: June 18, 2007
Content Source: Division of
Adult and Community Health,
National Center for Chronic Disease Prevention and Health Promotion
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